Holder for main-wheel arbors.



Ila-834,705. PATENTED 0012.0,1906.

Y 0.1:. BERRY.

hOI-DBR FOR MAIN WHEEL ARBORS.

- APPLIOAJTION FILED NOV. 2 1905..

0 11mm]? i TTE 1 F5 2 Mam INVEN'TUFEf To all whom it may concern:

UN TED STATES, PATENT OFFICE.

CHARLES E. BERRY, OF WALTHAM, MASSACHUSETTS.

. I HOLDER FOR MAiN-WHEEL ARBORS.'

Specification of Letters Patent.

Patented Oct. 30, 1906.

A li ati fil d November 27, 1905. Serial No. 289,190.

Be it known that I, CHARLES E. BERRY, of Waltham, in the county ofMiddlesex and State of Massachusetts, have invented certain new-anduseful Improvements in Holders for Watch Main-Wheel Arbors, of which thefollowing is a specification.

This invention is a device for holding the arbor of a watch main wheelwhile the wheel,

malnspring, and spring-barrel are being assembled. Such an arbor is verysmall, and

after the main wheel has been mounted thereon it has only a very shortprojecting end by which it can be held while the mainspring and barrelare being applied and secured in place. It has therefore been extremelydifiiarbor firmly,

' and also with a holding cult to hold the-arbor firmly and at the sametime prevent rotation thereof while attaching these parts. The arborsusually have on the end which projects from the main wheel a portionwhich is squared or given an otherwise non circular shape, upon whichthe Winding-wheel is placed and secured, and it has usually been thepractice to insert such non-circular end into the socket of thewinding-wheel or a key to hold the arbor from rotating when the screwwhich holds the barrel in place is driven in. As the squared portion,however, is very short, merely inserting it into the-socket of a keydoes not hold the and consequently the latter is always liableto tipover.

It is the object of the present invention to easily and firmly held inthe hand of the workman andis provided with a socket for receiving thenon-circular end of the arbor device for engaging and retaining thearbor in the socket, so that it will not slipout whilethe other partsare being assembled.

The preferred embodiment of my invention is illustrated in theaccompanying drawings, in which Figure 1' represents an elevation of thetool with a main wheel and the operating parts assembled together andretained by the hold er. Fig. 2 represents a longitudinal centralsection of the same on an enlarged scale. Fig. 3 represents aperspective view of the main wheel and its arbor. Fig. 4 represents aperspective view of the end of the holder.

The same reference characters indicate the same parts in all thefigures.

The arbor of a Watch main Wheel is re resented by a, and consists of asleeve whic is g provide a tool which is large enough to be 35 formed atone end with a portion 6, such portion being so shaped that when placedin a socket of complemental shape it will not rotate therein. Preferablythe end portion 6 is squared, though it may be given any other desiredprismatic shape, or it may be cylindrical with a feather, groove, orsome such non-circular offset. This portion 6 is adapted. to be insertedinto a correspondinglyshaped socket in a wind1ng-wheel and secured by ascrew threaded into the tapped bore 0 of the sleeve. The portion d isthat which turns in the plate of the watch while the mainspring is beingwound, and the part 6 serves as the bearing upon which the jewels f ofthe main Wheel 10 rotate as the spring unwinds to drive the watch.

g is the mainspring, which is connected at one end to a collar h on thehub of the main wheel and is wound about the same, being connected atits other end to this barrel being secured to the arbor by a screw j,having a threaded end engaging the tapped portion of the arbor 4 and asquared portion is passing through and engaging a correspondingly-shapedhole in the end I of the barrel.

In drivin the screw], which secures the barrel to t e main wheel arbor,it is of coursenecessary that the arbor, should be prevented fromrotating and'securely held. In order to so hold the arbor, I provide thetool of the present invention, which consists, essentially, of a tubularbody portion m and a shank or rod n, extending lon itudinally throughthe body portion. At t e ends of the part m are heads 0 and p, which fitabout and'guide the rod n, and in the end of the head 0 is a socket g,which is exactly the shape of the end part b of the arbor and is adaptedto receive the part b and to surround the same closely, embracing thenon-circular portion of the arbor, so as to prevent it from rotatingtherein. This socket is so arran ed with respect to the bore of the head0 t at the rod n passes through the center thereof and is adapted toproject a short distance through the socket and beyond the end of theholder when located as shown in Fig. 2. The end 1" of the rod or bar nis threaded to fit the threads of the arbor-bore, and so when the arborhas been set in the socket q the rod n may be rotated and screwed intothe arbor, whereby the latter may be positively engaged and retained inthe socket.

On the end of the rod opposite to thethe barrel 'i,

threaded portion r is a collar 3, which abuts against the end of thehead 1), these portions 1) and s constitutin abutments which preventprojection of the end 1' of the rod more than a certain predetermineddistance beyond the end of the head 0. Ihe sizes and disposition of theparts are preferably such that the rod a may be screwed a suflicientdistance into the arbor to bring the collar 8 against the head p,whilethe portion 1) of the arbor is in the head 0, so that there will be notsuflicient end play of the locking-rod n to permit disengagement of thearbor with the socket. When the arbor is so engaged,

it is firmly held and can neither be rotated nor tipped out of thesocket, and thus the main-wheel barrel may be easily and quickly placedupon the arbor and secured by screwing down the threaded member On theend of the rod below the collar 8 is a knurled handle part t, which maybe grasped and turned so as to screw the rod into the arbor.

It will be seen that the body or handle portion 172., which is made ofsuch size that it can be firmly grasped and held in the hand, providesthe part which holds the arbor from rotating, while the bar it serves asa locking means for retaining the end. of the arbor in the holder andpreventing accidental dislodgment thereof.

I claim 1. A holder for watch-arbors comprising a body portion having asocket shaped to receive and fit the end of an arbor, and a lockingdevice arranged to engage the arbor interna ly and retain it in thesocket.

2. A hold er comprisingamain portion having a socket, and a lockingmember constructed and arranged to engage an arbor and draw its end intothe socket.

3. A holder for watch-arbors comprising a body portion having a socketshaped to receive and fit the end of an arbor and prevent rotationthereof in the socket, and a locking device arranged to engage the arboron different s1des of its center and retain it firmly in the socket.

4. A holder for Watch-arbors comprising a body portion having a socketshaped to receive and fit the end of an arbor, and a locking deviceconstructed and arranged to enter a bore in the arbor and retain thesame in the socket.

5. A holder for watch-arbors comprising a body portion having a socketshaped to re ceive and fit the end of an arbor, and 'a lock ing deviceconstructed and arranged to extend through the socket and enter a borein the arbor, to engage said arbor and hold the same in the socket.

6. A holder for watch-arbors comprising a body portion and a lockingmember associated therewith, the body portion having a socket with anon-circular portion shaped to embrace a corresponding non-circularportion of a watch-arbor and hold the latter from rotating therein, andthe locking member having provisions for positively en agin g the arborand retaining said portion thereof in the socket.

7. A holder for watch-arbors comprising a body ortion and a lockingmember associated tierewith, the body portion having a socket with anon-circular portion shaped to embrace a corresponding non-circularportion of a watch-arbor and hold the latterirom rotating therein, andthe locking member being screw-threaded to enter and mesh with athreaded bore of the arbor.

8. A holder for watch-arbors comprising a body having a socket formedwith a non-circular portion, and a locking bar or rod associated withsaid body portion and arranged with its end adapted to extend throughthe socket, said end being screw-threaded.

9. A holder for watch-arbors comprising a body having a socket shaped toiit and embrace the prlsmatic end of a watch-arbor. and a rod or bararranged with its end adapted to project through the socket and threadedto enter and mesh with an internally-threaded bore in the arbor end.

10. A holder for watch-arbors comprising a tubular sleeve forming thebody or handle portion and having a socket 111 its end, and a rodextending longitudinally through the sleeve, one end being threaded andadapted to project through the socket.

11. A holder for watch-arbors comprising a tubular sleeve forming thebody or handle portion and having a socket in its end, and a rodextending and being movable longitudinally through the sleeve, ashoulder on the rod adapted to abut against a shoulder on the sleeve,and the end of the rod being threaded and adapted to project through,and be withdrawn from, the socket.

12. A holder for watch-arbors comprising a tubular sleeve having asocket in its end, a rod threaded at one end arranged to extend and movelongitudinally through the sleeve, being thereby adapted to projectthrough and withdraw from the socket, a handle portion on the rod forrotating the same, and a shoulder connected thereto adapted to abutagainst a shoulder on the sleeve to limit the amount of projection ofthe threaded end.

In testimony whereof I have allixed my signature in presence of twowitnesses.

CHARLES E. BERRY.

IIO

